Transition of the initial mass function in the galaxy based on binary population synthesis

Takuma Suda, Yutaka Komiya, Shimako Yamada, Yutaka Katsuta, Wako Aoki, Pilar Gil-Pons, Carolyn L. Doherty, Simon W. Campbell, Peter R Wood, Masayuki Y Fujimoto

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2 Citations (Scopus)

Abstract

We construct a binary population synthesis model to explore the star formation history of the Galaxy. The model includes the effects of AGB evolution and binary mass transfer for a given IMF and binary period distribution function. We discuss the origins of extremely metal-poor stars with enhancement of carbon or nitrogen, with the possible effect of mass loss at low-metallicity taken into account. Our results strongly support high-mass dominated star formation during the early epoch of the Galaxy in order to explain the observed frequency of carbon and nitrogen enhancements that are thought to result from mass transfer from a former AGB binary companion. Our model also suggests that the IMF had a transition phase at [Fe/H] ∼ -2.
Original languageEnglish
Title of host publicationFirst Stars IV - From Hayashi to the Future
Subtitle of host publicationKyoto, Japan; 21-25 May 2012
EditorsMasayuki Umemura, Kazuyuki Omukai
Place of PublicationUSA
PublisherAIP Publishing
Pages421-423
Number of pages3
ISBN (Print)9780735410923
DOIs
Publication statusPublished - 1 Dec 2012
EventConference on FIRST STARS - From Hayashi to the Future 2012 - Kyoto, Japan
Duration: 21 May 201225 May 2012
Conference number: 4th

Publication series

NameAIP Conference Proceedings
PublisherAIP Publishing
Volume1480
ISSN (Print)0094-243x

Conference

ConferenceConference on FIRST STARS - From Hayashi to the Future 2012
CountryJapan
CityKyoto
Period21/05/1225/05/12

Keywords

  • AGB stars
  • binary evolution
  • stellar evolution

Cite this

Suda, T., Komiya, Y., Yamada, S., Katsuta, Y., Aoki, W., Gil-Pons, P., ... Fujimoto, M. Y. (2012). Transition of the initial mass function in the galaxy based on binary population synthesis. In M. Umemura, & K. Omukai (Eds.), First Stars IV - From Hayashi to the Future: Kyoto, Japan; 21-25 May 2012 (pp. 421-423). (AIP Conference Proceedings ; Vol. 1480). USA: AIP Publishing. https://doi.org/10.1063/1.4754407
Suda, Takuma ; Komiya, Yutaka ; Yamada, Shimako ; Katsuta, Yutaka ; Aoki, Wako ; Gil-Pons, Pilar ; Doherty, Carolyn L. ; Campbell, Simon W. ; Wood, Peter R ; Fujimoto, Masayuki Y. / Transition of the initial mass function in the galaxy based on binary population synthesis. First Stars IV - From Hayashi to the Future: Kyoto, Japan; 21-25 May 2012. editor / Masayuki Umemura ; Kazuyuki Omukai. USA : AIP Publishing, 2012. pp. 421-423 (AIP Conference Proceedings ).
@inproceedings{0f0e1712ebb14b6484793a58da098c70,
title = "Transition of the initial mass function in the galaxy based on binary population synthesis",
abstract = "We construct a binary population synthesis model to explore the star formation history of the Galaxy. The model includes the effects of AGB evolution and binary mass transfer for a given IMF and binary period distribution function. We discuss the origins of extremely metal-poor stars with enhancement of carbon or nitrogen, with the possible effect of mass loss at low-metallicity taken into account. Our results strongly support high-mass dominated star formation during the early epoch of the Galaxy in order to explain the observed frequency of carbon and nitrogen enhancements that are thought to result from mass transfer from a former AGB binary companion. Our model also suggests that the IMF had a transition phase at [Fe/H] ∼ -2.",
keywords = "AGB stars, binary evolution, stellar evolution",
author = "Takuma Suda and Yutaka Komiya and Shimako Yamada and Yutaka Katsuta and Wako Aoki and Pilar Gil-Pons and Doherty, {Carolyn L.} and Campbell, {Simon W.} and Wood, {Peter R} and Fujimoto, {Masayuki Y}",
year = "2012",
month = "12",
day = "1",
doi = "10.1063/1.4754407",
language = "English",
isbn = "9780735410923",
series = "AIP Conference Proceedings",
publisher = "AIP Publishing",
pages = "421--423",
editor = "Masayuki Umemura and Kazuyuki Omukai",
booktitle = "First Stars IV - From Hayashi to the Future",
address = "United States of America",

}

Suda, T, Komiya, Y, Yamada, S, Katsuta, Y, Aoki, W, Gil-Pons, P, Doherty, CL, Campbell, SW, Wood, PR & Fujimoto, MY 2012, Transition of the initial mass function in the galaxy based on binary population synthesis. in M Umemura & K Omukai (eds), First Stars IV - From Hayashi to the Future: Kyoto, Japan; 21-25 May 2012. AIP Conference Proceedings , vol. 1480, AIP Publishing, USA, pp. 421-423, Conference on FIRST STARS - From Hayashi to the Future 2012, Kyoto, Japan, 21/05/12. https://doi.org/10.1063/1.4754407

Transition of the initial mass function in the galaxy based on binary population synthesis. / Suda, Takuma; Komiya, Yutaka; Yamada, Shimako; Katsuta, Yutaka; Aoki, Wako; Gil-Pons, Pilar; Doherty, Carolyn L.; Campbell, Simon W.; Wood, Peter R; Fujimoto, Masayuki Y.

First Stars IV - From Hayashi to the Future: Kyoto, Japan; 21-25 May 2012. ed. / Masayuki Umemura; Kazuyuki Omukai. USA : AIP Publishing, 2012. p. 421-423 (AIP Conference Proceedings ; Vol. 1480).

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

TY - GEN

T1 - Transition of the initial mass function in the galaxy based on binary population synthesis

AU - Suda, Takuma

AU - Komiya, Yutaka

AU - Yamada, Shimako

AU - Katsuta, Yutaka

AU - Aoki, Wako

AU - Gil-Pons, Pilar

AU - Doherty, Carolyn L.

AU - Campbell, Simon W.

AU - Wood, Peter R

AU - Fujimoto, Masayuki Y

PY - 2012/12/1

Y1 - 2012/12/1

N2 - We construct a binary population synthesis model to explore the star formation history of the Galaxy. The model includes the effects of AGB evolution and binary mass transfer for a given IMF and binary period distribution function. We discuss the origins of extremely metal-poor stars with enhancement of carbon or nitrogen, with the possible effect of mass loss at low-metallicity taken into account. Our results strongly support high-mass dominated star formation during the early epoch of the Galaxy in order to explain the observed frequency of carbon and nitrogen enhancements that are thought to result from mass transfer from a former AGB binary companion. Our model also suggests that the IMF had a transition phase at [Fe/H] ∼ -2.

AB - We construct a binary population synthesis model to explore the star formation history of the Galaxy. The model includes the effects of AGB evolution and binary mass transfer for a given IMF and binary period distribution function. We discuss the origins of extremely metal-poor stars with enhancement of carbon or nitrogen, with the possible effect of mass loss at low-metallicity taken into account. Our results strongly support high-mass dominated star formation during the early epoch of the Galaxy in order to explain the observed frequency of carbon and nitrogen enhancements that are thought to result from mass transfer from a former AGB binary companion. Our model also suggests that the IMF had a transition phase at [Fe/H] ∼ -2.

KW - AGB stars

KW - binary evolution

KW - stellar evolution

UR - http://www.scopus.com/inward/record.url?scp=84875496110&partnerID=8YFLogxK

U2 - 10.1063/1.4754407

DO - 10.1063/1.4754407

M3 - Conference Paper

SN - 9780735410923

T3 - AIP Conference Proceedings

SP - 421

EP - 423

BT - First Stars IV - From Hayashi to the Future

A2 - Umemura, Masayuki

A2 - Omukai, Kazuyuki

PB - AIP Publishing

CY - USA

ER -

Suda T, Komiya Y, Yamada S, Katsuta Y, Aoki W, Gil-Pons P et al. Transition of the initial mass function in the galaxy based on binary population synthesis. In Umemura M, Omukai K, editors, First Stars IV - From Hayashi to the Future: Kyoto, Japan; 21-25 May 2012. USA: AIP Publishing. 2012. p. 421-423. (AIP Conference Proceedings ). https://doi.org/10.1063/1.4754407